BioShock Infinite's first singleplayer expansion launches on November 12th, Irrational Games confirmed today. Burial At Sea: Episode 1 takes places to Rapture, recasting Booker and Elizabeth as a hardbitten private investigator and mysterious client respectively. Irrational have also rebalanced the combat to make for a more tense experience, and added a few extra features into the bargain.

If you're the kind of gamer who loves to spoil surprises for themselves, you're in luck, because 2K have released the first five minutes of BioShock Infinite's upcoming story expansion. Burial At Sea brings Booker and Elizabeth to Rapture, recasting them as PI and client in the submarine dystopia.

BioShock Infinite's upcoming story DLC takes players back to Rapture, replacing Vigors with Plasmids and reintroducing Booker as a hardbitten PI accepting an assignment from Elizabeth. This new trailer takes an appropriately mysterious tack, resembling a documentary or Public Service Announcement that helps to remind us of the setting.

Personally, we feel that Rapture is a far more believable and immersive game world than Columbia, despite Infinite's many accomplishments, so we're looking forward to going back somewhere beyond the sea. Happy we'll be.

Irrational Games has waxed lyrical about the upcoming Burial At Sea DLC for BioShock Infinite, which will eventually let players assume the role of Elizabeth in a bizarre Rapture-themed side story. Apparently it will feel very different to the traditional Booker gameplay experience.

But first... a challenge mode

Irrational Games and 2K Games have revealed at long last the first two DLC packs for Bioshock Infinite. The first will be a "pure action experience", whereas the second will be a narrative-led new adventure for Booker and Elizabeth that sees them plumb the depths of the ocean in a rather familiar location.

A BioShock Vita exclusive was announced back in 2011, but we were all rather surprised to learn that Sony and 2K still haven't managed to even agreeon whether the product will even enter pre-production. Irrational chief Ken Levine is apparently still playing matchmaker to the two companies and trying to find a price that works.